Your selection of a Shure U N I S P H E R E ~ Microphone will contribute significantly to the professional quality of your performance. This rugged unidirectional microphone effectively controls feedback (that very annoying loudspeaker "squeal") because it picks up sound only from the front of the microphone. Unwanted audience noise or other noises occurring at the rear of the microphone are eliminated or suppressed. This allows you to work at significantly greater distances from your microphone than with non-directional (omnidirectional) microphones, without picking up objectionable background sound or feedback. The built-in volume control on the microphone permits the user to change the loudness of the P.A. system at the microphone location. With the control on the microphone partially turned down (turn knob counterclockwise so that dot on knob is at 9 o'clock position), the basic overall loudness of the P.A. system can be adjusted by the main volume control at the amplifier location-then the user can adjust the volume up or down at the microphone position. Maximum volume occurs when the dot on the knob is adjacent to the dot on the microphone (12 o'clock position). In many instances, minimum setting of the volume control will reduce volume sufficiently so that the volume control can be used as an On-Off switch.
